Taking a break: Paused accretion in the symbiotic binary RT Cru

Autores
Pujol, Alejandro Javier; Luna, Gerardo Juan Manuel; Mukai, K.; Sokoloski, J. L.; Kuin, N. P. M.; Walter, F. M.; Angeloni, R.; Nikolov, Y.; Lopes de Oliveira, R.; Nuñez, Natalia Edith; Jaque Arancibia, Marcelo Daniel; Palma, Tali; Gramajo, Luciana Veronica
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Symbiotic binaries sometimes hide their symbiotic nature for significant periods of time. There is mounting observational evidence that, in symbiotics that are powered solely by the accretion of the red gianta's wind material onto a white dwarf, without any quasi-steady shell burning on the surface of the white dwarf, the characteristic emission lines in the optical spectrum can vanish, leaving the semblance of an isolated red giant spectrum. Here we present compelling evidence that this disappearance of optical emission lines from the spectrum of RT Cru in 2019 was due to a decrease in the accretion rate, which we derived by modeling the X-ray spectrum. This drop in accretion rate leads to a lower flux of ionizing photons and thus to faint or absent photoionization emission lines in the optical spectrum. We observed the white dwarf symbiotic RT Cru with XMM-Newton and Swift in X-rays and UV and collected ground-based optical spectra and photometry obtained over the last 33 yr. This long-Term coverage shows that, during most of the year 2019, the accretion rate onto the white dwarf was so low, = (3.2 ± 0.06) × 10×11 M· yr×1 (d/2.52 kpc)2, that the historically detected hard X-ray emission almost vanished, the UV flux faded by roughly 5 mag, the U, B, and V flickering amplitude decreased, and the Balmer lines virtually disappeared from 2019 January through March. Long-lasting low-Accretion episodes such as the one reported here may hamper the chances of RT Cru experiencing a nova-Type outburst despite the high mass of the accreting white dwarf.
Fil: Pujol, Alejandro Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad Nacional de Hurlingham; Argentina
Fil: Luna, Gerardo Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad Nacional de Hurlingham; Argentina
Fil: Mukai, K.. Nasa Goddard Space Flight Center; Estados Unidos. University of Maryland; Estados Unidos
Fil: Sokoloski, J. L.. Columbia University; Estados Unidos
Fil: Kuin, N. P. M.. University College London; Estados Unidos
Fil: Walter, F. M.. Stony Brook University ; State University Of New York;
Fil: Angeloni, R.. Gemini Observatory; Estados Unidos
Fil: Nikolov, Y.. Bulgarian Academy Of Sciences; Bulgaria
Fil: Lopes de Oliveira, R.. Universidade Federal de Sergipe; Brasil. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Nuñez, Natalia Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Jaque Arancibia, Marcelo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina. Universidad de La Serena; Chile
Fil: Palma, Tali. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Gramajo, Luciana Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Materia
BINARIES: SYMBIOTIC
STARS: INDIVIDUAL: RT CRU
X-RAYS: STARS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/225578
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/225578
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Taking a break: Paused accretion in the symbiotic binary RT CruPujol, Alejandro JavierLuna, Gerardo Juan ManuelMukai, K.Sokoloski, J. L.Kuin, N. P. M.Walter, F. M.Angeloni, R.Nikolov, Y.Lopes de Oliveira, R.Nuñez, Natalia EdithJaque Arancibia, Marcelo DanielPalma, TaliGramajo, Luciana VeronicaBINARIES: SYMBIOTICSTARS: INDIVIDUAL: RT CRUX-RAYS: STARShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1Symbiotic binaries sometimes hide their symbiotic nature for significant periods of time. There is mounting observational evidence that, in symbiotics that are powered solely by the accretion of the red gianta's wind material onto a white dwarf, without any quasi-steady shell burning on the surface of the white dwarf, the characteristic emission lines in the optical spectrum can vanish, leaving the semblance of an isolated red giant spectrum. Here we present compelling evidence that this disappearance of optical emission lines from the spectrum of RT Cru in 2019 was due to a decrease in the accretion rate, which we derived by modeling the X-ray spectrum. This drop in accretion rate leads to a lower flux of ionizing photons and thus to faint or absent photoionization emission lines in the optical spectrum. We observed the white dwarf symbiotic RT Cru with XMM-Newton and Swift in X-rays and UV and collected ground-based optical spectra and photometry obtained over the last 33 yr. This long-Term coverage shows that, during most of the year 2019, the accretion rate onto the white dwarf was so low, = (3.2 ± 0.06) × 10×11 M· yr×1 (d/2.52 kpc)2, that the historically detected hard X-ray emission almost vanished, the UV flux faded by roughly 5 mag, the U, B, and V flickering amplitude decreased, and the Balmer lines virtually disappeared from 2019 January through March. Long-lasting low-Accretion episodes such as the one reported here may hamper the chances of RT Cru experiencing a nova-Type outburst despite the high mass of the accreting white dwarf.Fil: Pujol, Alejandro Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad Nacional de Hurlingham; ArgentinaFil: Luna, Gerardo Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad Nacional de Hurlingham; ArgentinaFil: Mukai, K.. Nasa Goddard Space Flight Center; Estados Unidos. University of Maryland; Estados UnidosFil: Sokoloski, J. L.. Columbia University; Estados UnidosFil: Kuin, N. P. M.. University College London; Estados UnidosFil: Walter, F. M.. Stony Brook University ; State University Of New York;Fil: Angeloni, R.. Gemini Observatory; Estados UnidosFil: Nikolov, Y.. Bulgarian Academy Of Sciences; BulgariaFil: Lopes de Oliveira, R.. Universidade Federal de Sergipe; Brasil. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; BrasilFil: Nuñez, Natalia Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; ArgentinaFil: Jaque Arancibia, Marcelo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina. Universidad de La Serena; ChileFil: Palma, Tali. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaFil: Gramajo, Luciana Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; ArgentinaEDP Sciences2023-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/225578Pujol, Alejandro Javier; Luna, Gerardo Juan Manuel; Mukai, K.; Sokoloski, J. L.; Kuin, N. P. M.; et al.; Taking a break: Paused accretion in the symbiotic binary RT Cru; EDP Sciences; Astronomy and Astrophysics; 670; 32; 2-2023; 1-170004-6361CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/10.1051/0004-6361/202244967info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202244967info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:30:47Zoai:ri.conicet.gov.ar:11336/225578instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:30:47.245CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Taking a break: Paused accretion in the symbiotic binary RT Cru
title Taking a break: Paused accretion in the symbiotic binary RT Cru
spellingShingle Taking a break: Paused accretion in the symbiotic binary RT Cru
Pujol, Alejandro Javier
BINARIES: SYMBIOTIC
STARS: INDIVIDUAL: RT CRU
X-RAYS: STARS
title_short Taking a break: Paused accretion in the symbiotic binary RT Cru
title_full Taking a break: Paused accretion in the symbiotic binary RT Cru
title_fullStr Taking a break: Paused accretion in the symbiotic binary RT Cru
title_full_unstemmed Taking a break: Paused accretion in the symbiotic binary RT Cru
title_sort Taking a break: Paused accretion in the symbiotic binary RT Cru
dc.creator.none.fl_str_mv Pujol, Alejandro Javier
Luna, Gerardo Juan Manuel
Mukai, K.
Sokoloski, J. L.
Kuin, N. P. M.
Walter, F. M.
Angeloni, R.
Nikolov, Y.
Lopes de Oliveira, R.
Nuñez, Natalia Edith
Jaque Arancibia, Marcelo Daniel
Palma, Tali
Gramajo, Luciana Veronica
author Pujol, Alejandro Javier
author_facet Pujol, Alejandro Javier
Luna, Gerardo Juan Manuel
Mukai, K.
Sokoloski, J. L.
Kuin, N. P. M.
Walter, F. M.
Angeloni, R.
Nikolov, Y.
Lopes de Oliveira, R.
Nuñez, Natalia Edith
Jaque Arancibia, Marcelo Daniel
Palma, Tali
Gramajo, Luciana Veronica
author_role author
author2 Luna, Gerardo Juan Manuel
Mukai, K.
Sokoloski, J. L.
Kuin, N. P. M.
Walter, F. M.
Angeloni, R.
Nikolov, Y.
Lopes de Oliveira, R.
Nuñez, Natalia Edith
Jaque Arancibia, Marcelo Daniel
Palma, Tali
Gramajo, Luciana Veronica
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv BINARIES: SYMBIOTIC
STARS: INDIVIDUAL: RT CRU
X-RAYS: STARS
topic BINARIES: SYMBIOTIC
STARS: INDIVIDUAL: RT CRU
X-RAYS: STARS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Symbiotic binaries sometimes hide their symbiotic nature for significant periods of time. There is mounting observational evidence that, in symbiotics that are powered solely by the accretion of the red gianta's wind material onto a white dwarf, without any quasi-steady shell burning on the surface of the white dwarf, the characteristic emission lines in the optical spectrum can vanish, leaving the semblance of an isolated red giant spectrum. Here we present compelling evidence that this disappearance of optical emission lines from the spectrum of RT Cru in 2019 was due to a decrease in the accretion rate, which we derived by modeling the X-ray spectrum. This drop in accretion rate leads to a lower flux of ionizing photons and thus to faint or absent photoionization emission lines in the optical spectrum. We observed the white dwarf symbiotic RT Cru with XMM-Newton and Swift in X-rays and UV and collected ground-based optical spectra and photometry obtained over the last 33 yr. This long-Term coverage shows that, during most of the year 2019, the accretion rate onto the white dwarf was so low, = (3.2 ± 0.06) × 10×11 M· yr×1 (d/2.52 kpc)2, that the historically detected hard X-ray emission almost vanished, the UV flux faded by roughly 5 mag, the U, B, and V flickering amplitude decreased, and the Balmer lines virtually disappeared from 2019 January through March. Long-lasting low-Accretion episodes such as the one reported here may hamper the chances of RT Cru experiencing a nova-Type outburst despite the high mass of the accreting white dwarf.
Fil: Pujol, Alejandro Javier. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad Nacional de Hurlingham; Argentina
Fil: Luna, Gerardo Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina. Universidad Nacional de Hurlingham; Argentina
Fil: Mukai, K.. Nasa Goddard Space Flight Center; Estados Unidos. University of Maryland; Estados Unidos
Fil: Sokoloski, J. L.. Columbia University; Estados Unidos
Fil: Kuin, N. P. M.. University College London; Estados Unidos
Fil: Walter, F. M.. Stony Brook University ; State University Of New York;
Fil: Angeloni, R.. Gemini Observatory; Estados Unidos
Fil: Nikolov, Y.. Bulgarian Academy Of Sciences; Bulgaria
Fil: Lopes de Oliveira, R.. Universidade Federal de Sergipe; Brasil. Ministério de Ciencia, Tecnologia e Innovacao. Observatorio Nacional; Brasil
Fil: Nuñez, Natalia Edith. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina
Fil: Jaque Arancibia, Marcelo Daniel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio. Universidad Nacional de San Juan. Instituto de Ciencias Astronómicas, de la Tierra y del Espacio; Argentina. Universidad de La Serena; Chile
Fil: Palma, Tali. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
Fil: Gramajo, Luciana Veronica. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
description Symbiotic binaries sometimes hide their symbiotic nature for significant periods of time. There is mounting observational evidence that, in symbiotics that are powered solely by the accretion of the red gianta's wind material onto a white dwarf, without any quasi-steady shell burning on the surface of the white dwarf, the characteristic emission lines in the optical spectrum can vanish, leaving the semblance of an isolated red giant spectrum. Here we present compelling evidence that this disappearance of optical emission lines from the spectrum of RT Cru in 2019 was due to a decrease in the accretion rate, which we derived by modeling the X-ray spectrum. This drop in accretion rate leads to a lower flux of ionizing photons and thus to faint or absent photoionization emission lines in the optical spectrum. We observed the white dwarf symbiotic RT Cru with XMM-Newton and Swift in X-rays and UV and collected ground-based optical spectra and photometry obtained over the last 33 yr. This long-Term coverage shows that, during most of the year 2019, the accretion rate onto the white dwarf was so low, = (3.2 ± 0.06) × 10×11 M· yr×1 (d/2.52 kpc)2, that the historically detected hard X-ray emission almost vanished, the UV flux faded by roughly 5 mag, the U, B, and V flickering amplitude decreased, and the Balmer lines virtually disappeared from 2019 January through March. Long-lasting low-Accretion episodes such as the one reported here may hamper the chances of RT Cru experiencing a nova-Type outburst despite the high mass of the accreting white dwarf.
publishDate 2023
dc.date.none.fl_str_mv 2023-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/225578
Pujol, Alejandro Javier; Luna, Gerardo Juan Manuel; Mukai, K.; Sokoloski, J. L.; Kuin, N. P. M.; et al.; Taking a break: Paused accretion in the symbiotic binary RT Cru; EDP Sciences; Astronomy and Astrophysics; 670; 32; 2-2023; 1-17
0004-6361
CONICET Digital
CONICET
url http://hdl.handle.net/11336/225578
identifier_str_mv Pujol, Alejandro Javier; Luna, Gerardo Juan Manuel; Mukai, K.; Sokoloski, J. L.; Kuin, N. P. M.; et al.; Taking a break: Paused accretion in the symbiotic binary RT Cru; EDP Sciences; Astronomy and Astrophysics; 670; 32; 2-2023; 1-17
0004-6361
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/10.1051/0004-6361/202244967
info:eu-repo/semantics/altIdentifier/doi/10.1051/0004-6361/202244967
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv EDP Sciences
publisher.none.fl_str_mv EDP Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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